Remove/install air pump switchover valve - AR14.30-P-7255SMG

ENGINE 156 in MODEL 216, 221 

Fig 1: Identifying Air Pump Switchover Valve Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of injury  caused by fingers being pinched or crushed  when removing, installing or aligning hoods, doors, trunk lids, tailgates or sliding roof.	Keep body parts and limbs well clear of moving parts.	AS00.00-Z-0011-01A
	Notes on avoiding damage to electronic components due to electrostatic discharge	All models	AH54.00-P-0001-01A
1	Turn key in ignition switch to position "0".	On vehicles with code 889, Keyless Go: Press Keyless Go start/stop button repeatedly until ignition is switched off
2	Open engine hood
3	Remove front engine cover (1)	Do not tilt front engine cover, but lift upwards vertically otherwise the retaining lugs can break off.
4	Disconnect the pneumatic lines (2) at the air pump switchover valve (Y32)	Never use pointed or sharp tools to remove the pneumatic lines (2), otherwise these may be damaged. Check pneumatic lines (2) for wear and damage; replace them if required.
5	Disconnect electrical connector (3) at air pump switchover valve (Y32)
6	Lift off locking tab and pull off air pump switchover valve (Y32) from bracket
7	Install in the reverse order
8	Read out fault memory and erase if necessary	Stored faults which may be caused by disconnecting cables or by simulation during test operations, must be erased in the fault memory after completing the work.
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A
		STAR DIAGNOSIS diagnosis system